catena-Poly[[bis­(nitrato-κ(2) O,O′)copper(II)]-μ-2,2′-(ethane-1,2-diyldithio)di-1,3,4-thia­diazole-κ(2) N (4):N (4′)]

In the title compound, [Cu(NO(3))(2)(C(6)H(6)N(4)S(4))](n), the Cu(II) atom, occupying a crystallographic inversion centre, is six-coordinated by two N atoms of two 2,2′-[1,2-ethane­diyl­bis­(thio)]bis­[1,3,4-thia­diazole] ligands in trans positions, and four O atoms from two symmetry-related opposite nitrate anions, which are asymmetrically bonded, resulting in a strong distorted octa­hedral geometry of the central atom. The ethane group is equally disordered over two sites via another inversion centre. The bridging bidentate 2,2′-[1,2-ethanediylbis(thio)]bis­[1,3,4-thia­diazole] ligands link the Cu(II) centres into a one-dimensional chain. The chains are inter­connected via inter­molecular S⋯O inter­actions [3.044 (4) and 3.084 (5) Å] and weak C—H⋯O hydrogen bonds, generating a three-dimensional supra­molecular structure.